Improvement in lamp-refractors



A. SCHAEFFER & A. PFRUNDER.

LAMP-REFRACTOR.

N0; 191,888, Patented June 12,1877.

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AUGUST SOHAEFFER AND'ANTON PFRUNDER, OF LOUISVILLE, KENTUCKY.

' IMPROVEMENT IN LAMP-REFRACTORS.

Specification forming part of Letters Patent No. 191,888, dated June 12,1877; application filed April 30, 1877.

To all whom it may concern Be it known that we, AUGUST YSCHAEFFER andANTON PFRUNDER, of Louisville, in the county of Jefferson and State ofKentucky, have invented a new and Improved Lamp-Be tractor, of which thefollowing is a specification:

In the accompanying drawing, Figure 1 rep resents a side elevation of alamp with our improved refractors or magnifiers. Fig. 2 is a top view ofthe collar attachment of the rei'ractors, and Fig. 3 an inside view ofone of the refractors.

Similar letters of reference indicate corresponding parts.

Our invention is intended to provide for coal'oil or gas lamps animproved attachment by which the light fornight work is magnified andthrown with suitable power to a certain point.

The invention consists of the combination,

. with a gas or other lamp, of one or more hinged and adjustablerefractors, having pivoted and self-adjusting shades.

The ref'ractors are hinged and clamped to a detachable collar, attachedto the neck of the lamp or base of the burner.

In the drawing, A represents a coal-oil, gas, or other lamp, of anysuitable style and tinish, and B a metallic collar that is attached by asuitable clamp-screw to the neck of the lamp or base of the burner ofthe same. The

collar B is provided with lugs or cars a, to

which the ret'ractor (J is pivoted. One or more refractors may be,pivoted to the same collar, the required number of lugs being providedthereon.

The rel'ractors are. preferably made of pure flint glass, as this isbest adapted to throw the light in bright manner. The refractors are ofconvex shape, and attached to a circumferential metallic frame, 0, whichframe is hinged by an ear, a, to the lugs of the'collar, and clampedthereto into any suitable position by thumb-screws b. The refractors maythereby must be the work-stand to the light.

be adjusted, at any inclination, on a lamp, so as to throw the light tothe work at greater or less distance from the lamp. The refractors aremade of any size, and may also be made of other material andconstruction, as we do not confine ourselves to the use of flint glass.

The ret'ractor framcs C are provided with side projecting pivot-pins d,to which are sprung shades D, having small holes for the pivot-pins d.The upper ends of the shades D rest against the lamp-chimney, and theshades assume a position of difl'erent inclination actording to theposition of the refractors, as shown in Fig. l of the drawing.

The shades follow the motion of the refractors, so as to beself-adjusting in connection with the same. The more the position of therefractors approaches a vertical position the greater will be thedistance to which the light is thrown by the same, while the closer theyare set to a horizontal position the nearer Thus a convenient andreadily-attached device to lamps of all kinds is furnished for use inthe trades, and for all cases in which a cheap yet economical powerfuland brilliant light is de-' sired.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent .1. The combination, with a lamp, of one ormore adjustable retractors, having pivoted and self-adjusting shades,substantially as shown and described.

2. The combination, with a detachable collar fitted to the neck of alamp, of hinged and adjustable refractors and shades. pivoted to thelatter, substantially as described.

AUGUST SOHAEFFE It. ANTON PFBUNDER.

Witnesses J AGOB LIPS, J 01m G. How.

